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GATE 2019 - P&DS Quiz-7 (Programming in C ) (App update required to attempt this test)

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Question 1

#include <stdio.h>
int compare(int x,int y)
{
if(x<y)
return 1;
else
return 0;
}
void main(){
int k,s=0;
int arr[]={5,9,2,6,0,1,8};
for(int i=0;i<3;i++)
for(int j=i+1;j<7;j++)
{
if(compare(arr[i],arr[j]))
s=s+arr[j];
}
printf("%d",s);
}
What will be output of above code ?

Question 2

Consider the function func shown below:
int func(int num) {
int count = 0;
while (num) {
count++;
num>>= 1;
}
return (count);
}
The value returned by func(435)is______.

Question 3

x = 2;
y= ((++x)*(++x)*(++x));
What is the value of y after the execution of the above C code?

Question 4

Consider the following C program.

#include <stdio.h>
#include <string.h>

void printlength (char *s, char *t)
{ 
  unsigned int c = 0;
  int len = ((strlen (s) - strlen (t)) > c) ? strlen (s) : strlen (t);
  printf("%d\n", len);
}

void main()
{ 
  char *x = "abc";
  char *y = "defgh";
  printlength(x, y);
}

Recall that strlen is defined in string.h as returning a value of type size_t, which is an unsigned int .The output of the program is

Question 5

Consider the following function implemented in C:
void printxy(int x, int y)
{
int *ptr;
x = 0;
ptr = &x;
y = * ptr;
* ptr = 1;
printf (“%d, %d,” x, y);
}

The output of invoking printxy (1, 1) is

Question 6

What does the following fragment of c program print?

#include<stdio.h>
int main()
{
static int GATE[]={100,200,300,400,500};
static int *ptr = {GATE+2,GATE,GATE+3,GATE+4,GATE+1}

int **p = ptr;

ptr++;

printf("%d%d", ptr - p, **ptr};

}

The output of the program is______

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GATE & PSU CS Programming and Data Structures

Apr 2GATE & PSU CS